Effective nuclear charge increases as you go ________ on the periodic table

Question

BlackTom AI · Accepted Answer

To analyze where effective nuclear charge (Z_eff) increases on the periodic table, recall that Z_eff generally increases across a period to the right (more protons with similar shielding) and decreases down a group (increased shielding from additional electron shells).
Option 1: 'up and to the right.' This aligns with the established trend: moving up reduces shielding and increases proton pull, raising Z_eff.
Option 2: 'down and to the right' mixes two directions that have conflicting effects. Moving down increases shielding by adding electron shells, which tends to lower Z_eff, even though moving to the right would increase Z_eff; overall this combination does not describe a consistent increase in Z_eff.
Option 3: 'up and to the left' pairs the vertical direction that would raise Z_eff with a horizontal direction (to the left) where Z_eff generally decreases across a period, making this option inconsistent with the trend.
Option 4: 'down and to the left' combines both directions that typically decrease Z_eff: moving down increases shielding, and moving left across a period decreases proton count effect, both contributing to a lower Z_eff.
In summary, the direction that most accurately reflects rising Z_eff across the periodic table is toward higher atomic numbers (to the right) and toward lighter rows (up), which corresponds to option 1.

1A W25 Polarity and Dipole moments

Effective nuclear charge increases as you go ________ on the periodic table

查看解析

登录即可查看完整答案

类似问题

The chemical properties of elements O and F are similar.

Select the pair of elements you would expect to have similar chemical properties.

Which statement about magnesium is TRUE?

From the options below, select the answer which best describes the trends in atomic radius and first ionisation energy from left to right across the transition metals in a given period.

In general terms, which statements most correctly describes the relationship between the ionization energy, electronegativity and atomic radius of a group of elements in the same period (a row of elements).

Apply the trends in properties related to the blocks of the periodic table to identify the characteristic properties that belongs to the element with the following electron configuration (1 mark): 1s22s22p63s23p3 (A:1)

Which of the following atomic properties decreases down a group of the periodic table: I Ionisation energyII ElectronegativityIII Atomic radius

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单